leaves - meaning and definition. What is leaves
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What (who) is leaves - definition

MAIN ORGAN OF PHOTOSYNTHESIS AND TRANSPIRATION IN HIGHER PLANTS, USUALLY CONSISTING OF A FLAT GREEN BLADE ATTACHED TO THE STEM DIRECTLY OR BY A STALK
Foliage; Mesophyll; Leaves (botany); Mesophyll cell; Plant leaves; Foilage; Compound leaf; Compound leaves; Leaves; Axil; Leaf margin; Axils; Mesophyll tissue; True leaves; Spongy layer; Leaf sheath; Complex leaf; Complex leaves; Megaphylls; Reticulate venation; Crenate; Venatious; Leafage; Foliages; Leaf anatomy; Leaf vein; Basal leaf; Vein in Plants; Veinlets; Foliar; Leaf axil; Simple leaf; Simple leaves; Alternate leaf; Leaf (botany); Parallel venation; Leaf axils; Opposite leaf; Big-leafed; Vein (botany); Leaf veins; Leaf margins; Lepidote; Elepidote; Elepidotes; Simple (botany); Alternate (botany); Opposite (botany); Clasping; Alternate (leaf); Opposite (leaf); Simple (leaf); Hysteranthy; Reticulate veined; Reticular venation; Palmately compound; Mucronulate; Venation (botany); Leaf venation; Stipel; Leaf blade; Lamina (leaf); Vein patterning; Parallel-veined leaf; Vein (leaf); Glabrous leaves; Sinuated; Sinuate; Cauline; Feather-veined; Palmately veined; Sericeous; Basal leaves; Serrated leaves; Margin (botany); Lanose; Dichotomous venation; Leaf venations; Isobilateral; Apex (leaf); Serrate leaf; Reticulate leaf; Leaf apex; Leaf tip; Spongy mesophyll layer; Spongy mesophyll; Cauline leaf; Cauline leaves
  • 3D rendering of a [[computed tomography]] scan of a leaf
  • Palmate venation, ''[[Acer truncatum]]''
  • Flabellate venation, ''[[Adiantum cunninghamii]]''
  • The veins of a [[bramble]] leaf
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  • Scanning electron microscope image of trichomes on the lower surface of a ''Coleus blumei'' ([[coleus]]) leaf
  • Crossyne guttata]]''
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  • A leaf shed in [[autumn]]
  • Near the ground these ''[[Eucalyptus]]'' saplings have juvenile dorsiventral foliage from the previous year, but this season their newly sprouting foliage is isobilateral, like the mature foliage on the adult trees above
  • New [[pomegranate]] leaves
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  • [[Poinsettia]] [[bract]]s are leaves which have evolved red pigmentation in order to attract insects and birds to the central flowers, an adaptive function normally served by [[petal]]s (which are themselves leaves highly modified by evolution).
  • Some [[insect]]s, like ''[[Kallima inachus]]'', mimic leaves.
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  • A leaf with laminar structure and [[pinnate]] venation
  • [[Micrograph]] of a leaf skeleton
  • Medium-scale diagram of leaf internal anatomy
  • Fine-scale diagram of leaf structure
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  • SEM]] image of the leaf epidermis of ''[[Nicotiana alata]]'', showing [[trichome]]s (hair-like appendages) and [[stoma]]ta (eye-shaped slits, visible at full resolution).
  • Leaf morphology terms
  • Leaves showing various morphologies (clockwise from upper left): tripartite lobation, elliptic with serrulate margin, palmate venation, acuminate odd-pinnate (center), pinnatisect, lobed, elliptic with entire margin
  • Leaves shifting color in autumn (fall)
  • opposite]] one another, with successive pairs at right angles to each other (''decussate'') along the red stem. Note the developing buds in the axils of these leaves.
  • Whorled leaf pattern of the [[American tiger lily]]
  • Leaf of ''[[Tilia tomentosa]]'' (Silver lime tree)
  • Norfolk Island Pine]].
  • Venation of a Poinsettia (Euphorbia pulcherrima) leaf.
  • The overgrown petioles of [[rhubarb]] (''Rheum rhabarbarum'') are edible.
  • alt=Leafstem of dog rose with petiole, stipules and leaflets
  • The leaves on this plant (''[[Senecio angulatus]]'') are alternately arranged.
  • Common mullein (''[[Verbascum thapsus]]'') leaves are covered in dense, stellate trichomes.
  • Silky aster (''[[Symphyotrichum sericeum]]'') leaves are sericeous.
  • Branching veins on underside of [[taro]] leaf
  • linden]]
  • Animation of zooming into the leaf of a [[Sequoia sempervirens]] (Californian Redwood).
  • Vein skeleton of a leaf. Veins contain [[lignin]] that make them harder to degrade for microorganisms.

leaves         
plural form of leaf.
leaves         
n. pl.
Foliage.
Leaves         
·noun ·pl of Leaf.
II. Leaves ·pl of Leaf.

Wikipedia

Leaf

A leaf is a principal appendage of the stem of a vascular plant, usually borne laterally aboveground and specialized for photosynthesis. Leaves are collectively called foliage, as in "autumn foliage", while the leaves, stem, flower, and fruit collectively form the shoot system. In most leaves, the primary photosynthetic tissue is the palisade mesophyll and is located on the upper side of the blade or lamina of the leaf but in some species, including the mature foliage of Eucalyptus, palisade mesophyll is present on both sides and the leaves are said to be isobilateral. Most leaves are flattened and have distinct upper (adaxial) and lower (abaxial) surfaces that differ in color, hairiness, the number of stomata (pores that intake and output gases), the amount and structure of epicuticular wax and other features. Leaves are mostly green in color due to the presence of a compound called chlorophyll that is essential for photosynthesis as it absorbs light energy from the sun. A leaf with lighter-colored or white patches or edges is called a variegated leaf.

Leaves can have many different shapes, sizes, textures and colors. The broad, flat leaves with complex venation of flowering plants are known as megaphylls and the species that bear them, the majority, as broad-leaved or megaphyllous plants, which also includes acrogymnosperms and ferns. In the lycopods, with different evolutionary origins, the leaves are simple (with only a single vein) and are known as microphylls. Some leaves, such as bulb scales, are not above ground. In many aquatic species, the leaves are submerged in water. Succulent plants often have thick juicy leaves, but some leaves are without major photosynthetic function and may be dead at maturity, as in some cataphylls and spines. Furthermore, several kinds of leaf-like structures found in vascular plants are not totally homologous with them. Examples include flattened plant stems called phylloclades and cladodes, and flattened leaf stems called phyllodes which differ from leaves both in their structure and origin. Some structures of non-vascular plants look and function much like leaves. Examples include the phyllids of mosses and liverworts.

Examples of use of leaves
1. When the green chlorophyll goes out of the leaves, the leaves take on the color of other chemicals in them – that‘s how leaves get their beautiful autumn colors.
2. Corander says that the large leaves can be boiled and used like cabbage leaves for wrapping foods, and that smaller spring leaves can be used in salads.
3. What he leaves out of the cut is as important as what he leaves in.
4. "The sad thing is that he leaves us, but the good thing is that he leaves us on a high.
5. "One of the typical characteristics of the regional flora is small leaves or no leaves at all," he says.